221202010000001 has 4 divisors (see below), whose sum is σ = 221202056612100. Its totient is φ = 221201963387904.

The previous prime is 221202009999947. The next prime is 221202010000003. The reversal of 221202010000001 is 100000010202122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166926374160001 + 54275635840000 = 12919999^2 + 7367200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221202010000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221202010000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15262256 + ... + 25987313.

It is an arithmetic number, because the mean of its divisors is an integer number (55300514153025).

Almost surely, 2^{221202010000001} is an apocalyptic number.

It is an amenable number.

221202010000001 is a deficient number, since it is larger than the sum of its proper divisors (46612099).

221202010000001 is an equidigital number, since it uses as much as digits as its factorization.

221202010000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46612098.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221202010000001 its reverse (100000010202122), we get a palindrome (321202020202123).

The spelling of 221202010000001 in words is "two hundred twenty-one trillion, two hundred two billion, ten million, one", and thus it is an aban number.